Pentair Tube Sheet Coil Assembly Kit | MasterTemp / Max-E-Therm | 474060 C7450 The collar sits over this

The collar sits over this area and can mask developing fractures — catching them now avoids a more involved repair later

cross-reference your pump's model number against Pentair's parts diagram for your specific unit before ordering

When the seal flap deteriorates or loses flexibility

This is a direct OEM replacement in black plastic

also inspect the drive tracks and wheel assemblies for debris or wear before replacing the motor unit — a jammed drive train can mimic motor failure

Pentair Tube Sheet Coil Assembly Kit | MasterTemp / Max-E-Therm | 474060 C7450 The collar sits over thisThe Pentair Tube Sheet Coil Assembly Kit (474060) is the OEM replacement heat exchanger coil assembly for the MasterTemp 300NA, 300LP, and Max E Therm 333 NA LP series gas heaters. This kit includes Item No. 3 per the Pentair parts diagram and is designed for heaters manufactured after January 12, 2009. IMPORTANT: KIT LISTING INCLUDES MULTIPLE COMPONENTS This listing is a complete kit, not a single tube sheet or coil component. It includes Item No. 3